Sorry Roman, it's definatly NOT a settings issue.

I was pretty sure the sequence I outlined came up with the error every time, but I was just trying it again, and I think there is more to it.

If I do the following EXACTLY, I get the message every time :

- Open ClrMamePro (so obviously make sure it isn't open to start with)
- Load the 'official mame32 cabinets' datfile
- Close ClrMamePro immediatly
- Open ClrMamePro again
- Load the 'MAME Test Drivers v0.74' datfile
- Go back to the Profiler & load the 'official mame32 icons' datfile
- Run a Scan

Doing this, I get the error message EVERY time. If I then go back to the Profiler and load another 'official mame32 *' datfile, I get the same message.

To fix it, I do the following :

- Go back to the Profiler
- Load the 'Modeler v0.9.3a' datfile
- Go back to the Profiler
- Load the datfile I got the message on (so, using my example, I would load the 'official mame32 icons' datfile)
- Run a Scan

I no longer get the error message.

That's what makes me think that it is a problem with not clearing the BIOS list in memory, as the Modeler datfile doesn't have BIOS sets.

If I do the entire process from the beginning again, but load the 'Nebula v2.23c' datfile instead of the 'MAME Test Drivers v0.74' datfile, I get the same error message, but only get 'neogeo.zip' & 'pgmbios.zip' files showing as missing, instead of all of the Mame BIOS's, as happens with the Test Drivers file.

I hope that this helps! If you need me to try anything else, or want me to clarify anything, please let me know.

Edit : Should have mentioned that I DID check the .cmp files for anything funny, but couldn't find anything. All of my paths are 100% correct.

I also deleted the datfile from the Profiler screen, and made sure any associated file for that datfile was gone. I then re-downloaded the datfiles from your site and tried again, but still get the message following the sequence above.